Robert Peel (1788-1850)
Jul 2 British Prime Minister (Tory/Conservative/Peelite: 1834-35; 1841-46), founder of the British Conservative Party and the modern police force (Bobbies), dies after falling from a horse at 62
- Jul 4 William Kirby, English entomologist and original member of the Linnean Society and a Fellow of the Royal Society, dies at 90
- Jul 8 Prince Adolphus, British fieldmarshall1st Duke of Cambridge, 7th son of George III (b. 1774)
- Jul 9 Bab [Shirazi, Sayyid Ali Muhammad], Persian founder of Babism, executed by firing squad on orders of the Persian government at 30
Zachary Taylor (1784-1850)
Jul 9 12th US President (1849-50) and major general in the Mexican–American War, dies in the White House of an unknown digestive ailment at 65 after reportedly consuming copious amounts of raw fruit and iced milk
Margaret Fuller (1810-1850)
Jul 19 American feminist writer (Woman in the Nineteenth Century) and journalist (NY Tribune), drowns at 40 after being shipwrecked off Fire Island, NY
- Jul 28 Stefano Pavesi, Italian opera composer (Ser Marcantonio), dies at 71